Gemini Spark / Gemini Agent (ex-Project Mariner) · Google (DeepMind)
Google's successor lineage to Project Mariner (shut down as a standalone May 2026): Gemini Agent plus the I/O 2026 'Gemini Spark', a 24/7 always-on personal agent on dedicated cloud machines with deep Gmail/Workspace integration, MCP tool support, and check-before-acting guardrails, gated to AI Ultra ($100/mo) beta.
Identity
| Homepage | https://gemini.google/ |
|---|---|
| License | proprietary |
| Domain | general |
| Form factor | cloud-service · web-app · chat-integration |
Model support
| Model-agnostic | ○ no |
|---|---|
| Native models | Gemini 3 family · Gemini 2.5 Computer Use |
| Local models | ○ no |
| Pricing | subscription |
Extensibility
| MCP client | ✓ yes |
|---|---|
| Agent Skills support | ○ no |
| Plugins / hooks | ○ no |
Execution & safety
| Sandboxing | cloud-remote |
|---|---|
| Autonomy spectrum | semi-autonomous → background-cloud |
| Subagents | ? unknown |
| Parallel sessions | ✓ yes |
| Context management | persistent-memory |
Integration & evidence
| Headless / API | ○ no |
|---|---|
| GitHub integration | ○ no |
| Sources |
✓ profile last verified 2026-07-08 · benchmark figures are vendor-reported unless a source states otherwise